<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <link rel="stylesheet" href="eye.css">
    <div class="box">
        <label>
            <img src="images/close.png"id="eye">
        </label>
        <input type="password" id="pwd">
    </div>
    <script>
        var eye=document.getElementById('eye');
        var pwd=document.getElementById('pwd');
        eye.onclick=function(){
            if(pwd.type=='password'){
                pwd.type='text';
                eye.src='images/open.png';
            }else{
                pwd.type='password';
                eye.src='images/close.png';
            }
        };
    </script>
</body>
</html>